大肠癌为我国常见恶性肿瘤之一,发病和死亡率列在恶性肿瘤中第5～8位,目前全国恶性肿瘤死亡情况尚在调查中,大肠癌防治研究点还未建立,防治研究工作开展较少,需很快上去。大肠癌的流行病学和病因学近况1974年世界肿瘤流行病学调查统计,结、直肠癌在北美、澳大利亚、新西兰以及西欧的大部分地区死亡率是高的,在中美洲、加勒比海、非洲的撒 Colorectal cancer is one of the most common malignancies in China. Incidence and mortality are among the 5th to 8th among malignant tumors. At present, the death rate of malignant tumors in the country is still under investigation. The research point for the prevention and treatment of colorectal cancer has not yet been established. Less, need to go up quickly. Epidemiology and etiology of colorectal cancer Recent statistics from the World Cancer Epidemiology Survey in 1974 showed that the mortality rate of colorectal cancer was high in most of North America, Australia, New Zealand, and Western Europe, in Central America, the Caribbean, and Africa. Caesar